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RIO DE JANEIRO, BRAZIL - AUGUST 09: Vitezslav Gebas of the Czech Republic during the Canoe Single (C1) Men's Semifinal on Day 4 of the Rio 2016 Olympic Games at the Whitewater Stadium on August 9, 2016 in Rio de Janeiro, Brazil. (Photo by Bob Thomas/Popperfoto via Getty Images/Getty Images).

RIO DE JANEIRO, BRAZIL - AUGUST 09: Vitezslav Gebas of the Czech Republic during the Canoe Single (C1) Men's Semifinal on Day 4 of the Rio 2016 Olympic Games at the Whitewater Stadium on August 9, 2016 in Rio de Janeiro, Brazil. (Photo by Bob Thomas/Popperfoto via Getty Images/Getty Images).

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RIO DE JANEIRO, BRAZIL - AUGUST 09: Vitezslav Gebas of the Czech Republic during the Canoe Single (C1) Men's Final on Day 4 of the Rio 2016 Olympic Games at the Whitewater Stadium on August 9, 2016 in Rio de Janeiro, Brazil. (Photo by Bob Thomas/Popperfoto via Getty Images/Getty Images).

RIO DE JANEIRO, BRAZIL - AUGUST 09: Vitezslav Gebas of the Czech Republic during the Canoe Single (C1) Men's Final on Day 4 of the Rio 2016 Olympic Games at the Whitewater Stadium on August 9, 2016 in Rio de Janeiro, Brazil. (Photo by Bob Thomas/Popperfoto via Getty Images/Getty Images).

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LONDON, ENGLAND - JUNE 06: Vitezslav Gebas of Czech Republic in action during the Canoe Single (C1) men at Lee Valley White Water Centre on June 6, 2014 in London, England. (Photo by Justin Setterfield/Getty Images)

LONDON, ENGLAND - JUNE 06:  Vitezslav Gebas of Czech Republic in action during the Canoe Single (C1) men at Lee Valley White Water Centre on June 6, 2014 in London, England.  (Photo by Justin Setterfield/Getty Images)

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RIO DE JANEIRO, BRAZIL - AUGUST 09: Vitezslav Gebas of the Czech Republic competes during the Canoe Single (C1) Men's Final on Day 4 of the Rio 2016 Olympic Games at the Whitewater Stadium on August 9, 2016 in Rio de Janeiro, Brazil. (Photo by Rob Carr/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 09:  Vitezslav Gebas of the Czech Republic competes during the Canoe Single (C1) Men's Final on Day 4 of the Rio 2016 Olympic Games at the Whitewater Stadium on August 9, 2016 in Rio de Janeiro, Brazil.  (Photo by Rob Carr/Getty Images)

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RIO DE JANEIRO, BRAZIL - AUGUST 07: Vitezslav Gebas of the Czech Republic during the Canoe Single (C1) Men Heats 2nd Run on Day 2 of the Rio 2016 Olympic Games at the Whitewater Stadium on August 7, 2016 in Rio de Janeiro, Brazil. (Photo by Christian Petersen/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 07:  Vitezslav Gebas of the Czech Republic  during the Canoe Single (C1) Men Heats 2nd Run on Day 2 of the Rio 2016 Olympic Games at the Whitewater Stadium on August 7, 2016 in Rio de Janeiro, Brazil.  (Photo by Christian Petersen/Getty Images)